Does grapefruit peel have an effect on loaches

Key points of loach rearing:

1.Loaches are warm-water fish that live in the range of 15-30 and are kept in the optimal water temperature range of 24-27.

2.The identification method of male and female loach can be seen from its appearance: the male has a pointed head, a narrow and long pectoral fin, a body as thick as the tail end, and a bony lamella at the base of the upturned fin strip on the tip of the tail; The head of the female is oval and flat.

The spawning power of the female loach is very strong, a female loach can lay more than 4,000 eggs from early summer to early autumn, generally 2-3 times a year, and lay more than 10,000 eggs.

3.Because loach is an omnivorous fish, it can be fed as bait regardless of rice bran, wheat or fly maggots, and it can be fed three times a day. The amount of feeding is generally determined according to the feeding situation.

4.In the process of feeding loaches, some organic fertilizer can be appropriately applied, but when fertilizing, it must not be too much too frequent, and the pond water should be changed frequently, generally once every 10-15 days.

5.To catch loaches, first of all, the pond water should be drained, and the method of catching the big and leaving the small should be adopted to ensure that there are a certain number of loach seedlings in the pond, which is conducive to breeding and high yield.

6.With the growth of the loach species, gradually deepen the water level to the due depth, usually shallower, hot and high temperature can be deepened, and often inject new water to maintain a good water environment.

7.In late autumn and early winter, when the water temperature drops to 10 15 and the loach feeds less, it can be fished.

There will be an impact that may turn on the loach to die.

Bottom sowing and multiplication: refers to the placement of a certain standard of marine product seedlings at a self-determined density in a sea area suitable for aquaculture, so that it can be self-contained on the seabed.

It is a seafood farming method that grows long and continues to multiply. The cultivated products include sea cucumbers, Ezo scallops, abalone, etc.

1. Advantages of bottom-seeding proliferation:

1. The low-density, non-bait bottom-seeding and proliferation method ensures the natural growth of organisms in the natural environment;

2. As a healthy breeding mode, it makes full use of the self-purification ability of seawater to ensure the safety and quality of aquaculture organisms and effectively prevent diseases;

3. The breeding site is located on the seabed, the water temperature is low, the diurnal difference is small, and there is no temperature and salinity cline, which is suitable for cold-water biological breeding;

4. It is less affected by natural environmental changes such as wind and waves;

5. It has the characteristics of sustainable development.

Second, the disadvantages of bottom-seeding proliferation:

1. The growth period is long.

2. A large sea area is required.

1. The first is to choose the place of breeding, if you want to breed in freshwater, you can go to the freshwater area to take some fresh water to breed, and then try not to pollute the place too much, otherwise it is not suitable for the growth of salmon.

2. The breeding area should be large, if the area is too small, it is very unsuitable for the growth of salmon, and the larger breeding area is not only suitable for the growth of salmon, but also can improve the production of salmon.

3. Then it is to choose the fish to be fed. If you are not very good at mixing fish, you can choose to mix your own salmon fish. There are many on the market, and you can buy them accordingly.

4. Then pay attention to the oxygen content in the water, if the oxygen content is too low, it is very unsuitable for the growth of salmon. Therefore, pay attention to ventilation and water to create a good living environment for salmon.

5. Pay attention to sun exposure and light. Too much sunlight and too much water temperature are not suitable for salmon growth. Pay attention to shading measures to prevent the temperature from being too high.

6. Finally, don't pick too big or too small salmon fry when selecting them, which is not conducive to growth.

China is another world's best! The fish farming artifact made in the Yellow Sea has an annual output of 1,500 tons.

How many species of salmon are there?